The U.S. Army is looking to develop a new “fog of war,” but in order to keep up with ever-evolving technological advances, it is turning to a technology that dates back to the Civil War — smokescreens. The need for obfuscating troops, particularly during more exposed points of contact on the battlefield — namely water crossings and obstacle breaching maneuvers — has become a point of vulnerability for the Army, argues Lt. Col. Michael Carvelli in this year’s spring issue of Military Review .